Improvement in machines for plastering walls



G; STEVENS. v Machine for Plastering Walls.

No. 216,907. Patented June 24,1879a.

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PETERS. \HOTO-UTHOGRAPHER, WASHINGTON. D. C.

UNITED STATES PATENT OEEIcE.

GUSTAVUS STEVENS, OF EAST TAWAS, ASSIGNOR OF ONE-HALF HIS INTER EST TOEGBERT F. GUILD, OF EAST SAGINAW, MICHIGAN.

IMPROVEMENT IN MACHINES FOR PLASTERING WALLS.

Specification fornring part of Letters Patent No. 216,907, dated June24, 1879; application filed May 6, 1879.

To all whom it may concern:

Be it known that I, GUSTAVUS STEVENS, of East Tawas, in the county ofIosco and State of Michigan, have invented a new and Improved Machinefor Plastering Walls; and

I do hereby declare that the following is a full, clear, and exactdescription of the same, reference being had to the accompanyingdrawings,

and which shallpossess such a holding-capacity for the mortar as topermit more rapid work.

To this end my invention consists in a receptacle for the mortar, whichin shape is the longitudinal segment of a cylinder, which receptacle isprovided with a hinged leaf or press-plate that is adapted to moveradially against the mortar, and as the receptacle is slid upwardlyagainst the wall presses the plaster out through a narrow-gaged openingat the bottom, as hereinafter more fully described.

In the accompanying drawings, A represents the receptacle for themortar, which'has a curved side, a, with quadrantal ends I) b, forming alongitudinal segment of a cylinder. G is a hinged leaf or press-plate,pivoted near the centerof the cylinder, which forms the bottom portionof the device.

Just below the pivots of the hinged pressplate is the gage-bar D. Thisbar is removed from the edges of the end plates at c 0 a distance equalto the thickness of the coat of plaster to be applied, and when placedagainst the wall leaves a narrow slit, through which the plaster passesto form the coat. This bar D, I call a gage-bar, for the reason that itsposition determines the thickness of the coat, agil for this purpose itmay be made adjusta e.

The sides of the end plates 6 e are provided with runners, madepreferably of steel and with upturned ends (Z d at the top, so as tocause the device to pass smoothly over the Wa1l,and the bottom. of thecurved side is the bottom.

headed at f, to form a support for the pressplate and limit its backwardmovement.

The curved side and press-plate also are each provided with handles E E,by which the device is manipulated.

The operation of the machine is as follows: The press-plate, whenresting with its edge upon the head 8, forms the bottom of thereceptacle, which latter may be filled With-mortar in the usual way. Thehandles E are then grasped, one in each hand, and the machine applied tothe wall, with the runners resting against the same and the gage-b ar atThe device being now moved upwardly, and at the same time pressure beingapplied to the press'plate through the handle E, the mortar will beforced out the narrow opening at the bottom, and a coat applied to thewall of a thickness determined by the dis tance of the gagebar from theedges of the end plates at c.

By means of the device as thus described the operation of plastering isso greatly facilitated that a workman in one day is enabled to performthe labor of two, and the plastering effected with greater precision anduni formity than can be effected by hand.

I am aware of the fact that a receptacle designed to contain plaster hasbeen provided with a double-hinged bottom, which, when pressure isapplied thereto, forces out the plaster. v

I therefore limit my invention to the receptacle made in the form of alongitudinal segment of a cylinder, having quadrantal ends and apress-plate pivoted at the center of the cylinder or lower portion ofthe device, which construction and arrangement are adapted to much moreconvenient and easy manipulation.

Having thus described my invention, what I claim as new is- Thereceptacle A, made in the form of a longitudinal segment of a cylinderwith quadrantal ends, in combination with the pressplate (1, hinged atthe center of the cylinder or bottom of the device, as shown and de- Iscribed.

GUSTAVUS STEVENS. "Witnesses FRANK WHITTEMORE,

J O. WHITTEMORE.

